Home / 657,910.16-907,916.04-356,104.40

Finding the Fourth Proportional to 657,910.16, 907,916.04 and 356,104.40

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Solution

The fourth proportional to 657,910.16, 907,916.04 and 356,104.40 is: 491,424.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,910.16 : 907,916.04 = 356,104.40 : x
  2. Step 2: Convert to fraction form
    657,910.16/907,916.04 = 356,104.40/x
  3. Step 3: Cross multiply
    657,910.16x = 907,916.04 × 356,104.40
  4. Step 4: Simplify right side
    657,910.16x = 323,312,896,674.58
  5. Step 5: Solve for x
    x = 323,312,896,674.58/657,910.16
  6. Step 6: Final answer
    x = 491,424.08

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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.