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Finding the Fourth Proportional to 581,606.40, 816,115.20 and 581,606.40

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Solution

The fourth proportional to 581,606.40, 816,115.20 and 581,606.40 is: 816,115.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,606.40 : 816,115.20 = 581,606.40 : x
  2. Step 2: Convert to fraction form
    581,606.40/816,115.20 = 581,606.40/x
  3. Step 3: Cross multiply
    581,606.40x = 816,115.20 × 581,606.40
  4. Step 4: Simplify right side
    581,606.40x = 474,657,823,457.28
  5. Step 5: Solve for x
    x = 474,657,823,457.28/581,606.40
  6. Step 6: Final answer
    x = 816,115.20

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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 (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.