Home / 687,445,863,459.70-948,632,546,713.90-378,779,949,225.02

Finding the Fourth Proportional to 687,445,863,459.70, 948,632,546,713.90 and 378,779,949,225.02

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Solution

The fourth proportional to 687,445,863,459.70, 948,632,546,713.90 and 378,779,949,225.02 is: 522,692,777,681.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,445,863,459.70 : 948,632,546,713.90 = 378,779,949,225.02 : x
  2. Step 2: Convert to fraction form
    687,445,863,459.70/948,632,546,713.90 = 378,779,949,225.02/x
  3. Step 3: Cross multiply
    687,445,863,459.70x = 948,632,546,713.90 × 378,779,949,225.02
  4. Step 4: Simplify right side
    687,445,863,459.70x = 359,322,987,877,492,496,269,312
  5. Step 5: Solve for x
    x = 359,322,987,877,492,496,269,312/687,445,863,459.70
  6. Step 6: Final answer
    x = 522,692,777,681.62

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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.