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Finding the Fourth Proportional to 657,276.61, 907,042.32 and 355,470.61

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Solution

The fourth proportional to 657,276.61, 907,042.32 and 355,470.61 is: 490,549.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,276.61 : 907,042.32 = 355,470.61 : x
  2. Step 2: Convert to fraction form
    657,276.61/907,042.32 = 355,470.61/x
  3. Step 3: Cross multiply
    657,276.61x = 907,042.32 × 355,470.61
  4. Step 4: Simplify right side
    657,276.61x = 322,426,886,786.22
  5. Step 5: Solve for x
    x = 322,426,886,786.22/657,276.61
  6. Step 6: Final answer
    x = 490,549.77

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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.