Home / 670,645,628.19-925,491,011.40-373,281,488.78

Finding the Fourth Proportional to 670,645,628.19, 925,491,011.40 and 373,281,488.78

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Solution

The fourth proportional to 670,645,628.19, 925,491,011.40 and 373,281,488.78 is: 515,128,479.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,645,628.19 : 925,491,011.40 = 373,281,488.78 : x
  2. Step 2: Convert to fraction form
    670,645,628.19/925,491,011.40 = 373,281,488.78/x
  3. Step 3: Cross multiply
    670,645,628.19x = 925,491,011.40 × 373,281,488.78
  4. Step 4: Simplify right side
    670,645,628.19x = 345,468,662,583,272,448
  5. Step 5: Solve for x
    x = 345,468,662,583,272,448/670,645,628.19
  6. Step 6: Final answer
    x = 515,128,479.28

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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.