Home / 891,888,920.48-1,230,529,033.08-515,408,352.23

Finding the Fourth Proportional to 891,888,920.48, 1,230,529,033.08 and 515,408,352.23

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Solution

The fourth proportional to 891,888,920.48, 1,230,529,033.08 and 515,408,352.23 is: 711,103,060.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,888,920.48 : 1,230,529,033.08 = 515,408,352.23 : x
  2. Step 2: Convert to fraction form
    891,888,920.48/1,230,529,033.08 = 515,408,352.23/x
  3. Step 3: Cross multiply
    891,888,920.48x = 1,230,529,033.08 × 515,408,352.23
  4. Step 4: Simplify right side
    891,888,920.48x = 634,224,941,308,541,824
  5. Step 5: Solve for x
    x = 634,224,941,308,541,824/891,888,920.48
  6. Step 6: Final answer
    x = 711,103,060.87

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Double scale
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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.