Home / 698,382,141.55-963,790,621.65-380,859,711.95

Finding the Fourth Proportional to 698,382,141.55, 963,790,621.65 and 380,859,711.95

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Solution

The fourth proportional to 698,382,141.55, 963,790,621.65 and 380,859,711.95 is: 525,599,090.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,382,141.55 : 963,790,621.65 = 380,859,711.95 : x
  2. Step 2: Convert to fraction form
    698,382,141.55/963,790,621.65 = 380,859,711.95/x
  3. Step 3: Cross multiply
    698,382,141.55x = 963,790,621.65 × 380,859,711.95
  4. Step 4: Simplify right side
    698,382,141.55x = 367,069,018,544,139,904
  5. Step 5: Solve for x
    x = 367,069,018,544,139,904/698,382,141.55
  6. Step 6: Final answer
    x = 525,599,090.68

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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.