Home / 1,430,147.20-2,145,220.80-432,875.20

Finding the Fourth Proportional to 1,430,147.20, 2,145,220.80 and 432,875.20

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Solution

The fourth proportional to 1,430,147.20, 2,145,220.80 and 432,875.20 is: 649,312.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430,147.20 : 2,145,220.80 = 432,875.20 : x
  2. Step 2: Convert to fraction form
    1,430,147.20/2,145,220.80 = 432,875.20/x
  3. Step 3: Cross multiply
    1,430,147.20x = 2,145,220.80 × 432,875.20
  4. Step 4: Simplify right side
    1,430,147.20x = 928,612,882,844.16
  5. Step 5: Solve for x
    x = 928,612,882,844.16/1,430,147.20
  6. Step 6: Final answer
    x = 649,312.80

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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.