Home / 970,215.84-1,338,839.55-540,419.31

Finding the Fourth Proportional to 970,215.84, 1,338,839.55 and 540,419.31

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Solution

The fourth proportional to 970,215.84, 1,338,839.55 and 540,419.31 is: 745,746.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    970,215.84 : 1,338,839.55 = 540,419.31 : x
  2. Step 2: Convert to fraction form
    970,215.84/1,338,839.55 = 540,419.31/x
  3. Step 3: Cross multiply
    970,215.84x = 1,338,839.55 × 540,419.31
  4. Step 4: Simplify right side
    970,215.84x = 723,534,745,811.71
  5. Step 5: Solve for x
    x = 723,534,745,811.71/970,215.84
  6. Step 6: Final answer
    x = 745,746.17

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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.