Home / 820,547.65-1,230,427.61-387,904.91

Finding the Fourth Proportional to 820,547.65, 1,230,427.61 and 387,904.91

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Solution

The fourth proportional to 820,547.65, 1,230,427.61 and 387,904.91 is: 581,671.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,547.65 : 1,230,427.61 = 387,904.91 : x
  2. Step 2: Convert to fraction form
    820,547.65/1,230,427.61 = 387,904.91/x
  3. Step 3: Cross multiply
    820,547.65x = 1,230,427.61 × 387,904.91
  4. Step 4: Simplify right side
    820,547.65x = 477,288,909,379.04
  5. Step 5: Solve for x
    x = 477,288,909,379.04/820,547.65
  6. Step 6: Final answer
    x = 581,671.17

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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.