Home / 667,776,721.34-921,528,480.87-370,415,884.95

Finding the Fourth Proportional to 667,776,721.34, 921,528,480.87 and 370,415,884.95

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Solution

The fourth proportional to 667,776,721.34, 921,528,480.87 and 370,415,884.95 is: 511,172,038.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,776,721.34 : 921,528,480.87 = 370,415,884.95 : x
  2. Step 2: Convert to fraction form
    667,776,721.34/921,528,480.87 = 370,415,884.95/x
  3. Step 3: Cross multiply
    667,776,721.34x = 921,528,480.87 × 370,415,884.95
  4. Step 4: Simplify right side
    667,776,721.34x = 341,348,787,748,090,176
  5. Step 5: Solve for x
    x = 341,348,787,748,090,176/667,776,721.34
  6. Step 6: Final answer
    x = 511,172,038.26

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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.