Home / 698,742.54-964,298.90-392,915.19

Finding the Fourth Proportional to 698,742.54, 964,298.90 and 392,915.19

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Solution

The fourth proportional to 698,742.54, 964,298.90 and 392,915.19 is: 542,242.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,742.54 : 964,298.90 = 392,915.19 : x
  2. Step 2: Convert to fraction form
    698,742.54/964,298.90 = 392,915.19/x
  3. Step 3: Cross multiply
    698,742.54x = 964,298.90 × 392,915.19
  4. Step 4: Simplify right side
    698,742.54x = 378,887,683,545.72
  5. Step 5: Solve for x
    x = 378,887,683,545.72/698,742.54
  6. Step 6: Final answer
    x = 542,242.19

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1.5x scale

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.