Home / 918,109.60-1,377,164.40-912,860.80

Finding the Fourth Proportional to 918,109.60, 1,377,164.40 and 912,860.80

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Solution

The fourth proportional to 918,109.60, 1,377,164.40 and 912,860.80 is: 1,369,291.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,109.60 : 1,377,164.40 = 912,860.80 : x
  2. Step 2: Convert to fraction form
    918,109.60/1,377,164.40 = 912,860.80/x
  3. Step 3: Cross multiply
    918,109.60x = 1,377,164.40 × 912,860.80
  4. Step 4: Simplify right side
    918,109.60x = 1,257,159,395,915.52
  5. Step 5: Solve for x
    x = 1,257,159,395,915.52/918,109.60
  6. Step 6: Final answer
    x = 1,369,291.20

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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.