Home / 1,440,337.28-2,160,478.08-430,143.68

Finding the Fourth Proportional to 1,440,337.28, 2,160,478.08 and 430,143.68

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Solution

The fourth proportional to 1,440,337.28, 2,160,478.08 and 430,143.68 is: 645,207.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440,337.28 : 2,160,478.08 = 430,143.68 : x
  2. Step 2: Convert to fraction form
    1,440,337.28/2,160,478.08 = 430,143.68/x
  3. Step 3: Cross multiply
    1,440,337.28x = 2,160,478.08 × 430,143.68
  4. Step 4: Simplify right side
    1,440,337.28x = 929,315,991,890.53
  5. Step 5: Solve for x
    x = 929,315,991,890.53/1,440,337.28
  6. Step 6: Final answer
    x = 645,207.21

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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.