Home / 785,981.61-1,178,125.05-380,317.01

Finding the Fourth Proportional to 785,981.61, 1,178,125.05 and 380,317.01

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Solution

The fourth proportional to 785,981.61, 1,178,125.05 and 380,317.01 is: 570,065.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,981.61 : 1,178,125.05 = 380,317.01 : x
  2. Step 2: Convert to fraction form
    785,981.61/1,178,125.05 = 380,317.01/x
  3. Step 3: Cross multiply
    785,981.61x = 1,178,125.05 × 380,317.01
  4. Step 4: Simplify right side
    785,981.61x = 448,060,990,531.48
  5. Step 5: Solve for x
    x = 448,060,990,531.48/785,981.61
  6. Step 6: Final answer
    x = 570,065.49

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Double scale
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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.