Home / 1,223,242.16-1,688,078.09-679,377.85

Finding the Fourth Proportional to 1,223,242.16, 1,688,078.09 and 679,377.85

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Solution

The fourth proportional to 1,223,242.16, 1,688,078.09 and 679,377.85 is: 937,543.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,242.16 : 1,688,078.09 = 679,377.85 : x
  2. Step 2: Convert to fraction form
    1,223,242.16/1,688,078.09 = 679,377.85/x
  3. Step 3: Cross multiply
    1,223,242.16x = 1,688,078.09 × 679,377.85
  4. Step 4: Simplify right side
    1,223,242.16x = 1,146,842,851,579.03
  5. Step 5: Solve for x
    x = 1,146,842,851,579.03/1,223,242.16
  6. Step 6: Final answer
    x = 937,543.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.