Home / 1,292,912,145.86-1,939,368,244.48-310,338,685.34

Finding the Fourth Proportional to 1,292,912,145.86, 1,939,368,244.48 and 310,338,685.34

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Solution

The fourth proportional to 1,292,912,145.86, 1,939,368,244.48 and 310,338,685.34 is: 465,508,034.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,912,145.86 : 1,939,368,244.48 = 310,338,685.34 : x
  2. Step 2: Convert to fraction form
    1,292,912,145.86/1,939,368,244.48 = 310,338,685.34/x
  3. Step 3: Cross multiply
    1,292,912,145.86x = 1,939,368,244.48 × 310,338,685.34
  4. Step 4: Simplify right side
    1,292,912,145.86x = 601,860,991,391,492,352
  5. Step 5: Solve for x
    x = 601,860,991,391,492,352/1,292,912,145.86
  6. Step 6: Final answer
    x = 465,508,034.18

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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.