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Finding the Fourth Proportional to 702,981.16, 970,109.18 and 380,683.88

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Solution

The fourth proportional to 702,981.16, 970,109.18 and 380,683.88 is: 525,341.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,981.16 : 970,109.18 = 380,683.88 : x
  2. Step 2: Convert to fraction form
    702,981.16/970,109.18 = 380,683.88/x
  3. Step 3: Cross multiply
    702,981.16x = 970,109.18 × 380,683.88
  4. Step 4: Simplify right side
    702,981.16x = 369,304,926,666.02
  5. Step 5: Solve for x
    x = 369,304,926,666.02/702,981.16
  6. Step 6: Final answer
    x = 525,341.14

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1.5x scale

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.