Home / 918,002.90-1,377,004.35-286,915.70

Finding the Fourth Proportional to 918,002.90, 1,377,004.35 and 286,915.70

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Solution

The fourth proportional to 918,002.90, 1,377,004.35 and 286,915.70 is: 430,373.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,002.90 : 1,377,004.35 = 286,915.70 : x
  2. Step 2: Convert to fraction form
    918,002.90/1,377,004.35 = 286,915.70/x
  3. Step 3: Cross multiply
    918,002.90x = 1,377,004.35 × 286,915.70
  4. Step 4: Simplify right side
    918,002.90x = 395,084,166,983.30
  5. Step 5: Solve for x
    x = 395,084,166,983.30/918,002.90
  6. Step 6: Final answer
    x = 430,373.55

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1.5x scale

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.