Home / 712,370.61-983,071.08-390,080.52

Finding the Fourth Proportional to 712,370.61, 983,071.08 and 390,080.52

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Solution

The fourth proportional to 712,370.61, 983,071.08 and 390,080.52 is: 538,310.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,370.61 : 983,071.08 = 390,080.52 : x
  2. Step 2: Convert to fraction form
    712,370.61/983,071.08 = 390,080.52/x
  3. Step 3: Cross multiply
    712,370.61x = 983,071.08 × 390,080.52
  4. Step 4: Simplify right side
    712,370.61x = 383,476,878,083.36
  5. Step 5: Solve for x
    x = 383,476,878,083.36/712,370.61
  6. Step 6: Final answer
    x = 538,310.92

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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.