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Finding the Fourth Proportional to 657,741.61, 980,532.47 and 647,376.64

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Solution

The fourth proportional to 657,741.61, 980,532.47 and 647,376.64 is: 965,080.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,741.61 : 980,532.47 = 647,376.64 : x
  2. Step 2: Convert to fraction form
    657,741.61/980,532.47 = 647,376.64/x
  3. Step 3: Cross multiply
    657,741.61x = 980,532.47 × 647,376.64
  4. Step 4: Simplify right side
    657,741.61x = 634,773,815,006.61
  5. Step 5: Solve for x
    x = 634,773,815,006.61/657,741.61
  6. Step 6: Final answer
    x = 965,080.82

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.