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Finding the Fourth Proportional to 586,643.40, 880,621.20 and 454,111.20

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Solution

The fourth proportional to 586,643.40, 880,621.20 and 454,111.20 is: 681,674.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,643.40 : 880,621.20 = 454,111.20 : x
  2. Step 2: Convert to fraction form
    586,643.40/880,621.20 = 454,111.20/x
  3. Step 3: Cross multiply
    586,643.40x = 880,621.20 × 454,111.20
  4. Step 4: Simplify right side
    586,643.40x = 399,899,949,877.44
  5. Step 5: Solve for x
    x = 399,899,949,877.44/586,643.40
  6. Step 6: Final answer
    x = 681,674.68

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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.