Home / 781,038.24-1,078,061.93-454,428.09

Finding the Fourth Proportional to 781,038.24, 1,078,061.93 and 454,428.09

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Solution

The fourth proportional to 781,038.24, 1,078,061.93 and 454,428.09 is: 627,244.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,038.24 : 1,078,061.93 = 454,428.09 : x
  2. Step 2: Convert to fraction form
    781,038.24/1,078,061.93 = 454,428.09/x
  3. Step 3: Cross multiply
    781,038.24x = 1,078,061.93 × 454,428.09
  4. Step 4: Simplify right side
    781,038.24x = 489,901,621,479.47
  5. Step 5: Solve for x
    x = 489,901,621,479.47/781,038.24
  6. Step 6: Final answer
    x = 627,244.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.