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Finding the Fourth Proportional to 807,322.40, 1,210,400.40 and 452,445.20

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Solution

The fourth proportional to 807,322.40, 1,210,400.40 and 452,445.20 is: 678,340.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,322.40 : 1,210,400.40 = 452,445.20 : x
  2. Step 2: Convert to fraction form
    807,322.40/1,210,400.40 = 452,445.20/x
  3. Step 3: Cross multiply
    807,322.40x = 1,210,400.40 × 452,445.20
  4. Step 4: Simplify right side
    807,322.40x = 547,639,851,058.08
  5. Step 5: Solve for x
    x = 547,639,851,058.08/807,322.40
  6. Step 6: Final answer
    x = 678,340.96

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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.