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Finding the Fourth Proportional to 645,071.52, 888,165.60 and 585,284.64

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Solution

The fourth proportional to 645,071.52, 888,165.60 and 585,284.64 is: 805,848.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,071.52 : 888,165.60 = 585,284.64 : x
  2. Step 2: Convert to fraction form
    645,071.52/888,165.60 = 585,284.64/x
  3. Step 3: Cross multiply
    645,071.52x = 888,165.60 × 585,284.64
  4. Step 4: Simplify right side
    645,071.52x = 519,829,683,456.38
  5. Step 5: Solve for x
    x = 519,829,683,456.38/645,071.52
  6. Step 6: Final answer
    x = 805,848.14

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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.