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Finding the Fourth Proportional to 712,925.07, 983,836.02 and 390,655.23

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Solution

The fourth proportional to 712,925.07, 983,836.02 and 390,655.23 is: 539,103.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,925.07 : 983,836.02 = 390,655.23 : x
  2. Step 2: Convert to fraction form
    712,925.07/983,836.02 = 390,655.23/x
  3. Step 3: Cross multiply
    712,925.07x = 983,836.02 × 390,655.23
  4. Step 4: Simplify right side
    712,925.07x = 384,340,686,675.39
  5. Step 5: Solve for x
    x = 384,340,686,675.39/712,925.07
  6. Step 6: Final answer
    x = 539,103.90

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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.