Home / 500,908,577.69-690,966,642.48-312,409,614.14

Finding the Fourth Proportional to 500,908,577.69, 690,966,642.48 and 312,409,614.14

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Solution

The fourth proportional to 500,908,577.69, 690,966,642.48 and 312,409,614.14 is: 430,946,148.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,908,577.69 : 690,966,642.48 = 312,409,614.14 : x
  2. Step 2: Convert to fraction form
    500,908,577.69/690,966,642.48 = 312,409,614.14/x
  3. Step 3: Cross multiply
    500,908,577.69x = 690,966,642.48 × 312,409,614.14
  4. Step 4: Simplify right side
    500,908,577.69x = 215,864,622,160,788,128
  5. Step 5: Solve for x
    x = 215,864,622,160,788,128/500,908,577.69
  6. Step 6: Final answer
    x = 430,946,148.21

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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.