Home / 645,596,143.56-891,197,580.30-434,025,677.28

Finding the Fourth Proportional to 645,596,143.56, 891,197,580.30 and 434,025,677.28

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Solution

The fourth proportional to 645,596,143.56, 891,197,580.30 and 434,025,677.28 is: 599,140,247.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,596,143.56 : 891,197,580.30 = 434,025,677.28 : x
  2. Step 2: Convert to fraction form
    645,596,143.56/891,197,580.30 = 434,025,677.28/x
  3. Step 3: Cross multiply
    645,596,143.56x = 891,197,580.30 × 434,025,677.28
  4. Step 4: Simplify right side
    645,596,143.56x = 386,802,633,380,004,608
  5. Step 5: Solve for x
    x = 386,802,633,380,004,608/645,596,143.56
  6. Step 6: Final answer
    x = 599,140,247.72

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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.