Home / 691,927,325.63-954,859,086.73-390,576,081.95

Finding the Fourth Proportional to 691,927,325.63, 954,859,086.73 and 390,576,081.95

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Solution

The fourth proportional to 691,927,325.63, 954,859,086.73 and 390,576,081.95 is: 538,994,641.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,927,325.63 : 954,859,086.73 = 390,576,081.95 : x
  2. Step 2: Convert to fraction form
    691,927,325.63/954,859,086.73 = 390,576,081.95/x
  3. Step 3: Cross multiply
    691,927,325.63x = 954,859,086.73 × 390,576,081.95
  4. Step 4: Simplify right side
    691,927,325.63x = 372,945,120,909,358,656
  5. Step 5: Solve for x
    x = 372,945,120,909,358,656/691,927,325.63
  6. Step 6: Final answer
    x = 538,994,641.63

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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.