Home / 1,277,883,925.80-1,913,424,666.30-815,317,679.40

Finding the Fourth Proportional to 1,277,883,925.80, 1,913,424,666.30 and 815,317,679.40

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Solution

The fourth proportional to 1,277,883,925.80, 1,913,424,666.30 and 815,317,679.40 is: 1,220,806,465.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,883,925.80 : 1,913,424,666.30 = 815,317,679.40 : x
  2. Step 2: Convert to fraction form
    1,277,883,925.80/1,913,424,666.30 = 815,317,679.40/x
  3. Step 3: Cross multiply
    1,277,883,925.80x = 1,913,424,666.30 × 815,317,679.40
  4. Step 4: Simplify right side
    1,277,883,925.80x = 1,560,048,958,634,435,328
  5. Step 5: Solve for x
    x = 1,560,048,958,634,435,328/1,277,883,925.80
  6. Step 6: Final answer
    x = 1,220,806,465.39

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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.