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Finding the Fourth Proportional to 644,590.40, 966,885.60 and 572,705.60

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Solution

The fourth proportional to 644,590.40, 966,885.60 and 572,705.60 is: 859,058.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,590.40 : 966,885.60 = 572,705.60 : x
  2. Step 2: Convert to fraction form
    644,590.40/966,885.60 = 572,705.60/x
  3. Step 3: Cross multiply
    644,590.40x = 966,885.60 × 572,705.60
  4. Step 4: Simplify right side
    644,590.40x = 553,740,797,679.36
  5. Step 5: Solve for x
    x = 553,740,797,679.36/644,590.40
  6. Step 6: Final answer
    x = 859,058.40

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.