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Finding the Fourth Proportional to 985,655.60, 1,478,483.40 and 354,487.40

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Solution

The fourth proportional to 985,655.60, 1,478,483.40 and 354,487.40 is: 531,731.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,655.60 : 1,478,483.40 = 354,487.40 : x
  2. Step 2: Convert to fraction form
    985,655.60/1,478,483.40 = 354,487.40/x
  3. Step 3: Cross multiply
    985,655.60x = 1,478,483.40 × 354,487.40
  4. Step 4: Simplify right side
    985,655.60x = 524,103,736,409.16
  5. Step 5: Solve for x
    x = 524,103,736,409.16/985,655.60
  6. Step 6: Final answer
    x = 531,731.10

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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.