Home / 430,233.40-645,350.10-288,515.80

Finding the Fourth Proportional to 430,233.40, 645,350.10 and 288,515.80

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Solution

The fourth proportional to 430,233.40, 645,350.10 and 288,515.80 is: 432,773.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,233.40 : 645,350.10 = 288,515.80 : x
  2. Step 2: Convert to fraction form
    430,233.40/645,350.10 = 288,515.80/x
  3. Step 3: Cross multiply
    430,233.40x = 645,350.10 × 288,515.80
  4. Step 4: Simplify right side
    430,233.40x = 186,193,700,381.58
  5. Step 5: Solve for x
    x = 186,193,700,381.58/430,233.40
  6. Step 6: Final answer
    x = 432,773.70

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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.