Home / 915,626,428.80-1,373,439,643.20-879,913,593.60

Finding the Fourth Proportional to 915,626,428.80, 1,373,439,643.20 and 879,913,593.60

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Solution

The fourth proportional to 915,626,428.80, 1,373,439,643.20 and 879,913,593.60 is: 1,319,870,390.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,626,428.80 : 1,373,439,643.20 = 879,913,593.60 : x
  2. Step 2: Convert to fraction form
    915,626,428.80/1,373,439,643.20 = 879,913,593.60/x
  3. Step 3: Cross multiply
    915,626,428.80x = 1,373,439,643.20 × 879,913,593.60
  4. Step 4: Simplify right side
    915,626,428.80x = 1,208,508,212,040,813,824
  5. Step 5: Solve for x
    x = 1,208,508,212,040,813,824/915,626,428.80
  6. Step 6: Final answer
    x = 1,319,870,390.40

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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.