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Finding the Fourth Proportional to 867,124.40, 1,300,686.60 and 368,423.60

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Solution

The fourth proportional to 867,124.40, 1,300,686.60 and 368,423.60 is: 552,635.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,124.40 : 1,300,686.60 = 368,423.60 : x
  2. Step 2: Convert to fraction form
    867,124.40/1,300,686.60 = 368,423.60/x
  3. Step 3: Cross multiply
    867,124.40x = 1,300,686.60 × 368,423.60
  4. Step 4: Simplify right side
    867,124.40x = 479,203,639,643.76
  5. Step 5: Solve for x
    x = 479,203,639,643.76/867,124.40
  6. Step 6: Final answer
    x = 552,635.40

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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.