Home / 781,221,401.36-1,171,173,056.76-643,053,827.20

Finding the Fourth Proportional to 781,221,401.36, 1,171,173,056.76 and 643,053,827.20

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Solution

The fourth proportional to 781,221,401.36, 1,171,173,056.76 and 643,053,827.20 is: 964,038,254.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,221,401.36 : 1,171,173,056.76 = 643,053,827.20 : x
  2. Step 2: Convert to fraction form
    781,221,401.36/1,171,173,056.76 = 643,053,827.20/x
  3. Step 3: Cross multiply
    781,221,401.36x = 1,171,173,056.76 × 643,053,827.20
  4. Step 4: Simplify right side
    781,221,401.36x = 753,127,316,463,040,896
  5. Step 5: Solve for x
    x = 753,127,316,463,040,896/781,221,401.36
  6. Step 6: Final answer
    x = 964,038,254.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.