Home / 917,921,639.52-1,266,699,688.56-500,225,401.44

Finding the Fourth Proportional to 917,921,639.52, 1,266,699,688.56 and 500,225,401.44

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Solution

The fourth proportional to 917,921,639.52, 1,266,699,688.56 and 500,225,401.44 is: 690,293,520.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,921,639.52 : 1,266,699,688.56 = 500,225,401.44 : x
  2. Step 2: Convert to fraction form
    917,921,639.52/1,266,699,688.56 = 500,225,401.44/x
  3. Step 3: Cross multiply
    917,921,639.52x = 1,266,699,688.56 × 500,225,401.44
  4. Step 4: Simplify right side
    917,921,639.52x = 633,635,360,213,848,960
  5. Step 5: Solve for x
    x = 633,635,360,213,848,960/917,921,639.52
  6. Step 6: Final answer
    x = 690,293,520.64

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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.