Home / 887,680,971.84-1,223,997,281.41-663,945,637.62

Finding the Fourth Proportional to 887,680,971.84, 1,223,997,281.41 and 663,945,637.62

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Solution

The fourth proportional to 887,680,971.84, 1,223,997,281.41 and 663,945,637.62 is: 915,495,184.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,680,971.84 : 1,223,997,281.41 = 663,945,637.62 : x
  2. Step 2: Convert to fraction form
    887,680,971.84/1,223,997,281.41 = 663,945,637.62/x
  3. Step 3: Cross multiply
    887,680,971.84x = 1,223,997,281.41 × 663,945,637.62
  4. Step 4: Simplify right side
    887,680,971.84x = 812,667,655,450,909,056
  5. Step 5: Solve for x
    x = 812,667,655,450,909,056/887,680,971.84
  6. Step 6: Final answer
    x = 915,495,184.90

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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.