Home / 724,982.95-1,000,492.32-398,300.17

Finding the Fourth Proportional to 724,982.95, 1,000,492.32 and 398,300.17

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Solution

The fourth proportional to 724,982.95, 1,000,492.32 and 398,300.17 is: 549,662.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,982.95 : 1,000,492.32 = 398,300.17 : x
  2. Step 2: Convert to fraction form
    724,982.95/1,000,492.32 = 398,300.17/x
  3. Step 3: Cross multiply
    724,982.95x = 1,000,492.32 × 398,300.17
  4. Step 4: Simplify right side
    724,982.95x = 398,496,261,139.69
  5. Step 5: Solve for x
    x = 398,496,261,139.69/724,982.95
  6. Step 6: Final answer
    x = 549,662.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.