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Finding the Fourth Proportional to 657,776.21, 907,730.81 and 371,298.77

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Solution

The fourth proportional to 657,776.21, 907,730.81 and 371,298.77 is: 512,392.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,776.21 : 907,730.81 = 371,298.77 : x
  2. Step 2: Convert to fraction form
    657,776.21/907,730.81 = 371,298.77/x
  3. Step 3: Cross multiply
    657,776.21x = 907,730.81 × 371,298.77
  4. Step 4: Simplify right side
    657,776.21x = 337,039,331,387.61
  5. Step 5: Solve for x
    x = 337,039,331,387.61/657,776.21
  6. Step 6: Final answer
    x = 512,392.10

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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.