Home / 807,639.60-1,210,001.40-470,404.20

Finding the Fourth Proportional to 807,639.60, 1,210,001.40 and 470,404.20

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Solution

The fourth proportional to 807,639.60, 1,210,001.40 and 470,404.20 is: 704,757.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,639.60 : 1,210,001.40 = 470,404.20 : x
  2. Step 2: Convert to fraction form
    807,639.60/1,210,001.40 = 470,404.20/x
  3. Step 3: Cross multiply
    807,639.60x = 1,210,001.40 × 470,404.20
  4. Step 4: Simplify right side
    807,639.60x = 569,189,740,565.88
  5. Step 5: Solve for x
    x = 569,189,740,565.88/807,639.60
  6. Step 6: Final answer
    x = 704,757.10

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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.