Home / 712,845.32-983,726.52-390,567.62

Finding the Fourth Proportional to 712,845.32, 983,726.52 and 390,567.62

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Solution

The fourth proportional to 712,845.32, 983,726.52 and 390,567.62 is: 538,983.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,845.32 : 983,726.52 = 390,567.62 : x
  2. Step 2: Convert to fraction form
    712,845.32/983,726.52 = 390,567.62/x
  3. Step 3: Cross multiply
    712,845.32x = 983,726.52 × 390,567.62
  4. Step 4: Simplify right side
    712,845.32x = 384,211,725,647.28
  5. Step 5: Solve for x
    x = 384,211,725,647.28/712,845.32
  6. Step 6: Final answer
    x = 538,983.30

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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.