Home / 612,047.40-918,071.10-454,583.40

Finding the Fourth Proportional to 612,047.40, 918,071.10 and 454,583.40

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Solution

The fourth proportional to 612,047.40, 918,071.10 and 454,583.40 is: 681,875.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,047.40 : 918,071.10 = 454,583.40 : x
  2. Step 2: Convert to fraction form
    612,047.40/918,071.10 = 454,583.40/x
  3. Step 3: Cross multiply
    612,047.40x = 918,071.10 × 454,583.40
  4. Step 4: Simplify right side
    612,047.40x = 417,339,882,079.74
  5. Step 5: Solve for x
    x = 417,339,882,079.74/612,047.40
  6. Step 6: Final answer
    x = 681,875.10

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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.