Home / 868,145.40-1,301,780.70-513,268.20

Finding the Fourth Proportional to 868,145.40, 1,301,780.70 and 513,268.20

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Solution

The fourth proportional to 868,145.40, 1,301,780.70 and 513,268.20 is: 769,643.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,145.40 : 1,301,780.70 = 513,268.20 : x
  2. Step 2: Convert to fraction form
    868,145.40/1,301,780.70 = 513,268.20/x
  3. Step 3: Cross multiply
    868,145.40x = 1,301,780.70 × 513,268.20
  4. Step 4: Simplify right side
    868,145.40x = 668,162,636,683.74
  5. Step 5: Solve for x
    x = 668,162,636,683.74/868,145.40
  6. Step 6: Final answer
    x = 769,643.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.