Home / 674,415.40-1,011,623.10-338,492.20

Finding the Fourth Proportional to 674,415.40, 1,011,623.10 and 338,492.20

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Solution

The fourth proportional to 674,415.40, 1,011,623.10 and 338,492.20 is: 507,738.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,415.40 : 1,011,623.10 = 338,492.20 : x
  2. Step 2: Convert to fraction form
    674,415.40/1,011,623.10 = 338,492.20/x
  3. Step 3: Cross multiply
    674,415.40x = 1,011,623.10 × 338,492.20
  4. Step 4: Simplify right side
    674,415.40x = 342,426,528,689.82
  5. Step 5: Solve for x
    x = 342,426,528,689.82/674,415.40
  6. Step 6: Final answer
    x = 507,738.30

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Double scale
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Similar ratio
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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.