Home / 809,857,000.80-1,214,785,501.20-534,357,986.40

Finding the Fourth Proportional to 809,857,000.80, 1,214,785,501.20 and 534,357,986.40

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Solution

The fourth proportional to 809,857,000.80, 1,214,785,501.20 and 534,357,986.40 is: 801,536,979.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,857,000.80 : 1,214,785,501.20 = 534,357,986.40 : x
  2. Step 2: Convert to fraction form
    809,857,000.80/1,214,785,501.20 = 534,357,986.40/x
  3. Step 3: Cross multiply
    809,857,000.80x = 1,214,785,501.20 × 534,357,986.40
  4. Step 4: Simplify right side
    809,857,000.80x = 649,130,334,329,146,752
  5. Step 5: Solve for x
    x = 649,130,334,329,146,752/809,857,000.80
  6. Step 6: Final answer
    x = 801,536,979.60

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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.