Home / 1,223,656.28-1,688,915.76-679,979.02

Finding the Fourth Proportional to 1,223,656.28, 1,688,915.76 and 679,979.02

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Solution

The fourth proportional to 1,223,656.28, 1,688,915.76 and 679,979.02 is: 938,521.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,656.28 : 1,688,915.76 = 679,979.02 : x
  2. Step 2: Convert to fraction form
    1,223,656.28/1,688,915.76 = 679,979.02/x
  3. Step 3: Cross multiply
    1,223,656.28x = 1,688,915.76 × 679,979.02
  4. Step 4: Simplify right side
    1,223,656.28x = 1,148,427,279,125.07
  5. Step 5: Solve for x
    x = 1,148,427,279,125.07/1,223,656.28
  6. Step 6: Final answer
    x = 938,521.13

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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.