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Finding the Fourth Proportional to 910,342,865.20, 1,365,514,297.80 and 813,408,026.80

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Solution

The fourth proportional to 910,342,865.20, 1,365,514,297.80 and 813,408,026.80 is: 1,220,112,040.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,342,865.20 : 1,365,514,297.80 = 813,408,026.80 : x
  2. Step 2: Convert to fraction form
    910,342,865.20/1,365,514,297.80 = 813,408,026.80/x
  3. Step 3: Cross multiply
    910,342,865.20x = 1,365,514,297.80 × 813,408,026.80
  4. Step 4: Simplify right side
    910,342,865.20x = 1,110,720,290,540,685,440
  5. Step 5: Solve for x
    x = 1,110,720,290,540,685,440/910,342,865.20
  6. Step 6: Final answer
    x = 1,220,112,040.20

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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.