Home / 785,255.60-1,178,102.10-385,909.40

Finding the Fourth Proportional to 785,255.60, 1,178,102.10 and 385,909.40

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Solution

The fourth proportional to 785,255.60, 1,178,102.10 and 385,909.40 is: 578,971.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,255.60 : 1,178,102.10 = 385,909.40 : x
  2. Step 2: Convert to fraction form
    785,255.60/1,178,102.10 = 385,909.40/x
  3. Step 3: Cross multiply
    785,255.60x = 1,178,102.10 × 385,909.40
  4. Step 4: Simplify right side
    785,255.60x = 454,640,674,549.74
  5. Step 5: Solve for x
    x = 454,640,674,549.74/785,255.60
  6. Step 6: Final answer
    x = 578,971.58

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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.