Home / 513,819,308.56-709,071,330.36-278,869,969.12

Finding the Fourth Proportional to 513,819,308.56, 709,071,330.36 and 278,869,969.12

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Solution

The fourth proportional to 513,819,308.56, 709,071,330.36 and 278,869,969.12 is: 384,840,928.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,819,308.56 : 709,071,330.36 = 278,869,969.12 : x
  2. Step 2: Convert to fraction form
    513,819,308.56/709,071,330.36 = 278,869,969.12/x
  3. Step 3: Cross multiply
    513,819,308.56x = 709,071,330.36 × 278,869,969.12
  4. Step 4: Simplify right side
    513,819,308.56x = 197,738,700,001,370,528
  5. Step 5: Solve for x
    x = 197,738,700,001,370,528/513,819,308.56
  6. Step 6: Final answer
    x = 384,840,928.92

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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.