Home / 1,131,352,743.60-1,561,402,702.17-685,303,019.15

Finding the Fourth Proportional to 1,131,352,743.60, 1,561,402,702.17 and 685,303,019.15

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Solution

The fourth proportional to 1,131,352,743.60, 1,561,402,702.17 and 685,303,019.15 is: 945,800,495.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,352,743.60 : 1,561,402,702.17 = 685,303,019.15 : x
  2. Step 2: Convert to fraction form
    1,131,352,743.60/1,561,402,702.17 = 685,303,019.15/x
  3. Step 3: Cross multiply
    1,131,352,743.60x = 1,561,402,702.17 × 685,303,019.15
  4. Step 4: Simplify right side
    1,131,352,743.60x = 1,070,033,985,898,262,272
  5. Step 5: Solve for x
    x = 1,070,033,985,898,262,272/1,131,352,743.60
  6. Step 6: Final answer
    x = 945,800,495.87

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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.