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Finding the Fourth Proportional to 657,069.30, 920,519.10 and 657,069.30

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Solution

The fourth proportional to 657,069.30, 920,519.10 and 657,069.30 is: 920,519.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,069.30 : 920,519.10 = 657,069.30 : x
  2. Step 2: Convert to fraction form
    657,069.30/920,519.10 = 657,069.30/x
  3. Step 3: Cross multiply
    657,069.30x = 920,519.10 × 657,069.30
  4. Step 4: Simplify right side
    657,069.30x = 604,844,840,673.63
  5. Step 5: Solve for x
    x = 604,844,840,673.63/657,069.30
  6. Step 6: Final answer
    x = 920,519.10

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.