Home / 876,802.10-1,315,721.55-639,547.70

Finding the Fourth Proportional to 876,802.10, 1,315,721.55 and 639,547.70

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Solution

The fourth proportional to 876,802.10, 1,315,721.55 and 639,547.70 is: 959,699.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,802.10 : 1,315,721.55 = 639,547.70 : x
  2. Step 2: Convert to fraction form
    876,802.10/1,315,721.55 = 639,547.70/x
  3. Step 3: Cross multiply
    876,802.10x = 1,315,721.55 × 639,547.70
  4. Step 4: Simplify right side
    876,802.10x = 841,466,691,142.94
  5. Step 5: Solve for x
    x = 841,466,691,142.94/876,802.10
  6. Step 6: Final answer
    x = 959,699.68

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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.