Home / 712,439.28-983,158.81-385,746.66

Finding the Fourth Proportional to 712,439.28, 983,158.81 and 385,746.66

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Solution

The fourth proportional to 712,439.28, 983,158.81 and 385,746.66 is: 532,326.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,439.28 : 983,158.81 = 385,746.66 : x
  2. Step 2: Convert to fraction form
    712,439.28/983,158.81 = 385,746.66/x
  3. Step 3: Cross multiply
    712,439.28x = 983,158.81 × 385,746.66
  4. Step 4: Simplify right side
    712,439.28x = 379,250,226,242.71
  5. Step 5: Solve for x
    x = 379,250,226,242.71/712,439.28
  6. Step 6: Final answer
    x = 532,326.38

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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.