Home / 901,369,860.86-1,243,897,711.56-499,490,322.53

Finding the Fourth Proportional to 901,369,860.86, 1,243,897,711.56 and 499,490,322.53

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Solution

The fourth proportional to 901,369,860.86, 1,243,897,711.56 and 499,490,322.53 is: 689,300,692.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    901,369,860.86 : 1,243,897,711.56 = 499,490,322.53 : x
  2. Step 2: Convert to fraction form
    901,369,860.86/1,243,897,711.56 = 499,490,322.53/x
  3. Step 3: Cross multiply
    901,369,860.86x = 1,243,897,711.56 × 499,490,322.53
  4. Step 4: Simplify right side
    901,369,860.86x = 621,314,869,135,213,824
  5. Step 5: Solve for x
    x = 621,314,869,135,213,824/901,369,860.86
  6. Step 6: Final answer
    x = 689,300,692.33

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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.