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Finding the Fourth Proportional to 579,715.30, 785,103.98 and 579,715.30

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Solution

The fourth proportional to 579,715.30, 785,103.98 and 579,715.30 is: 785,103.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,715.30 : 785,103.98 = 579,715.30 : x
  2. Step 2: Convert to fraction form
    579,715.30/785,103.98 = 579,715.30/x
  3. Step 3: Cross multiply
    579,715.30x = 785,103.98 × 579,715.30
  4. Step 4: Simplify right side
    579,715.30x = 455,136,786,398.32
  5. Step 5: Solve for x
    x = 455,136,786,398.32/579,715.30
  6. Step 6: Final answer
    x = 785,103.98

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.