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Finding the Fourth Proportional to 477,030.40, 715,545.60 and 290,406.40

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Solution

The fourth proportional to 477,030.40, 715,545.60 and 290,406.40 is: 435,609.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,030.40 : 715,545.60 = 290,406.40 : x
  2. Step 2: Convert to fraction form
    477,030.40/715,545.60 = 290,406.40/x
  3. Step 3: Cross multiply
    477,030.40x = 715,545.60 × 290,406.40
  4. Step 4: Simplify right side
    477,030.40x = 207,799,021,731.84
  5. Step 5: Solve for x
    x = 207,799,021,731.84/477,030.40
  6. Step 6: Final answer
    x = 435,609.60

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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.