Home / 523,088,610.22-721,913,321.87-390,700,014.11

Finding the Fourth Proportional to 523,088,610.22, 721,913,321.87 and 390,700,014.11

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Solution

The fourth proportional to 523,088,610.22, 721,913,321.87 and 390,700,014.11 is: 539,204,141.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,088,610.22 : 721,913,321.87 = 390,700,014.11 : x
  2. Step 2: Convert to fraction form
    523,088,610.22/721,913,321.87 = 390,700,014.11/x
  3. Step 3: Cross multiply
    523,088,610.22x = 721,913,321.87 × 390,700,014.11
  4. Step 4: Simplify right side
    523,088,610.22x = 282,051,545,038,173,152
  5. Step 5: Solve for x
    x = 282,051,545,038,173,152/523,088,610.22
  6. Step 6: Final answer
    x = 539,204,141.57

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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.