Home / 712,565.71-983,341.02-390,296.28

Finding the Fourth Proportional to 712,565.71, 983,341.02 and 390,296.28

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Solution

The fourth proportional to 712,565.71, 983,341.02 and 390,296.28 is: 538,609.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,565.71 : 983,341.02 = 390,296.28 : x
  2. Step 2: Convert to fraction form
    712,565.71/983,341.02 = 390,296.28/x
  3. Step 3: Cross multiply
    712,565.71x = 983,341.02 × 390,296.28
  4. Step 4: Simplify right side
    712,565.71x = 383,794,342,077.41
  5. Step 5: Solve for x
    x = 383,794,342,077.41/712,565.71
  6. Step 6: Final answer
    x = 538,609.05

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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.