Home / 788,385,274.35-1,087,978,727.99-435,984,975.78

Finding the Fourth Proportional to 788,385,274.35, 1,087,978,727.99 and 435,984,975.78

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Solution

The fourth proportional to 788,385,274.35, 1,087,978,727.99 and 435,984,975.78 is: 601,663,164.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,385,274.35 : 1,087,978,727.99 = 435,984,975.78 : x
  2. Step 2: Convert to fraction form
    788,385,274.35/1,087,978,727.99 = 435,984,975.78/x
  3. Step 3: Cross multiply
    788,385,274.35x = 1,087,978,727.99 × 435,984,975.78
  4. Step 4: Simplify right side
    788,385,274.35x = 474,342,379,371,875,328
  5. Step 5: Solve for x
    x = 474,342,379,371,875,328/788,385,274.35
  6. Step 6: Final answer
    x = 601,663,164.96

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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.