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Finding the Fourth Proportional to 873,696.32, 1,205,570.88 and 491,700.32

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Solution

The fourth proportional to 873,696.32, 1,205,570.88 and 491,700.32 is: 678,473.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,696.32 : 1,205,570.88 = 491,700.32 : x
  2. Step 2: Convert to fraction form
    873,696.32/1,205,570.88 = 491,700.32/x
  3. Step 3: Cross multiply
    873,696.32x = 1,205,570.88 × 491,700.32
  4. Step 4: Simplify right side
    873,696.32x = 592,779,587,478.68
  5. Step 5: Solve for x
    x = 592,779,587,478.68/873,696.32
  6. Step 6: Final answer
    x = 678,473.26

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Double scale
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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.