Home / 687,445,862,436.10-948,632,545,303.15-378,779,948,202.84

Finding the Fourth Proportional to 687,445,862,436.10, 948,632,545,303.15 and 378,779,948,202.84

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Solution

The fourth proportional to 687,445,862,436.10, 948,632,545,303.15 and 378,779,948,202.84 is: 522,692,776,272.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,445,862,436.10 : 948,632,545,303.15 = 378,779,948,202.84 : x
  2. Step 2: Convert to fraction form
    687,445,862,436.10/948,632,545,303.15 = 378,779,948,202.84/x
  3. Step 3: Cross multiply
    687,445,862,436.10x = 948,632,545,303.15 × 378,779,948,202.84
  4. Step 4: Simplify right side
    687,445,862,436.10x = 359,322,986,373,455,481,405,440
  5. Step 5: Solve for x
    x = 359,322,986,373,455,481,405,440/687,445,862,436.10
  6. Step 6: Final answer
    x = 522,692,776,272.05

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.