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Finding the Fourth Proportional to 560,543.40, 840,815.10 and 462,128.40

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Solution

The fourth proportional to 560,543.40, 840,815.10 and 462,128.40 is: 693,192.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,543.40 : 840,815.10 = 462,128.40 : x
  2. Step 2: Convert to fraction form
    560,543.40/840,815.10 = 462,128.40/x
  3. Step 3: Cross multiply
    560,543.40x = 840,815.10 × 462,128.40
  4. Step 4: Simplify right side
    560,543.40x = 388,564,536,858.84
  5. Step 5: Solve for x
    x = 388,564,536,858.84/560,543.40
  6. Step 6: Final answer
    x = 693,192.60

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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.