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Finding the Fourth Proportional to 612,007.40, 918,011.10 and 462,708.20

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Solution

The fourth proportional to 612,007.40, 918,011.10 and 462,708.20 is: 694,062.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,007.40 : 918,011.10 = 462,708.20 : x
  2. Step 2: Convert to fraction form
    612,007.40/918,011.10 = 462,708.20/x
  3. Step 3: Cross multiply
    612,007.40x = 918,011.10 × 462,708.20
  4. Step 4: Simplify right side
    612,007.40x = 424,771,263,661.02
  5. Step 5: Solve for x
    x = 424,771,263,661.02/612,007.40
  6. Step 6: Final answer
    x = 694,062.30

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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.