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Finding the Fourth Proportional to 522,290,419.80, 783,435,629.70 and 369,235,411.80

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Solution

The fourth proportional to 522,290,419.80, 783,435,629.70 and 369,235,411.80 is: 553,853,117.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,290,419.80 : 783,435,629.70 = 369,235,411.80 : x
  2. Step 2: Convert to fraction form
    522,290,419.80/783,435,629.70 = 369,235,411.80/x
  3. Step 3: Cross multiply
    522,290,419.80x = 783,435,629.70 × 369,235,411.80
  4. Step 4: Simplify right side
    522,290,419.80x = 289,272,177,351,071,808
  5. Step 5: Solve for x
    x = 289,272,177,351,071,808/522,290,419.80
  6. Step 6: Final answer
    x = 553,853,117.70

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Double scale
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1.5x scale

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.