Home / 458,171,901.90-686,502,025.65-390,147,453.90

Finding the Fourth Proportional to 458,171,901.90, 686,502,025.65 and 390,147,453.90

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Solution

The fourth proportional to 458,171,901.90, 686,502,025.65 and 390,147,453.90 is: 584,577,570.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,171,901.90 : 686,502,025.65 = 390,147,453.90 : x
  2. Step 2: Convert to fraction form
    458,171,901.90/686,502,025.65 = 390,147,453.90/x
  3. Step 3: Cross multiply
    458,171,901.90x = 686,502,025.65 × 390,147,453.90
  4. Step 4: Simplify right side
    458,171,901.90x = 267,837,017,404,539,968
  5. Step 5: Solve for x
    x = 267,837,017,404,539,968/458,171,901.90
  6. Step 6: Final answer
    x = 584,577,570.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.