Home / 1,287,586,296.80-1,931,379,445.20-469,725,279.20

Finding the Fourth Proportional to 1,287,586,296.80, 1,931,379,445.20 and 469,725,279.20

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Solution

The fourth proportional to 1,287,586,296.80, 1,931,379,445.20 and 469,725,279.20 is: 704,587,918.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,586,296.80 : 1,931,379,445.20 = 469,725,279.20 : x
  2. Step 2: Convert to fraction form
    1,287,586,296.80/1,931,379,445.20 = 469,725,279.20/x
  3. Step 3: Cross multiply
    1,287,586,296.80x = 1,931,379,445.20 × 469,725,279.20
  4. Step 4: Simplify right side
    1,287,586,296.80x = 907,217,749,137,711,104
  5. Step 5: Solve for x
    x = 907,217,749,137,711,104/1,287,586,296.80
  6. Step 6: Final answer
    x = 704,587,918.80

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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.