Home / 918,000.60-1,376,309.70-385,085.40

Finding the Fourth Proportional to 918,000.60, 1,376,309.70 and 385,085.40

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Solution

The fourth proportional to 918,000.60, 1,376,309.70 and 385,085.40 is: 577,338.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,000.60 : 1,376,309.70 = 385,085.40 : x
  2. Step 2: Convert to fraction form
    918,000.60/1,376,309.70 = 385,085.40/x
  3. Step 3: Cross multiply
    918,000.60x = 1,376,309.70 × 385,085.40
  4. Step 4: Simplify right side
    918,000.60x = 529,996,771,348.38
  5. Step 5: Solve for x
    x = 529,996,771,348.38/918,000.60
  6. Step 6: Final answer
    x = 577,338.15

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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.