Home / 712,515.60-983,271.93-390,246.03

Finding the Fourth Proportional to 712,515.60, 983,271.93 and 390,246.03

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Solution

The fourth proportional to 712,515.60, 983,271.93 and 390,246.03 is: 538,539.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,515.60 : 983,271.93 = 390,246.03 : x
  2. Step 2: Convert to fraction form
    712,515.60/983,271.93 = 390,246.03/x
  3. Step 3: Cross multiply
    712,515.60x = 983,271.93 × 390,246.03
  4. Step 4: Simplify right side
    712,515.60x = 383,717,967,092.94
  5. Step 5: Solve for x
    x = 383,717,967,092.94/712,515.60
  6. Step 6: Final answer
    x = 538,539.74

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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.