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Finding the Fourth Proportional to 874,878.72, 1,207,332.64 and 472,470.72

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Solution

The fourth proportional to 874,878.72, 1,207,332.64 and 472,470.72 is: 652,009.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,878.72 : 1,207,332.64 = 472,470.72 : x
  2. Step 2: Convert to fraction form
    874,878.72/1,207,332.64 = 472,470.72/x
  3. Step 3: Cross multiply
    874,878.72x = 1,207,332.64 × 472,470.72
  4. Step 4: Simplify right side
    874,878.72x = 570,429,321,700.30
  5. Step 5: Solve for x
    x = 570,429,321,700.30/874,878.72
  6. Step 6: Final answer
    x = 652,009.60

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1.5x scale

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.