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Finding the Fourth Proportional to 1,791,232,607.90, 2,471,908,488.76 and 987,442,460.90

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Solution

The fourth proportional to 1,791,232,607.90, 2,471,908,488.76 and 987,442,460.90 is: 1,362,674,724.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,791,232,607.90 : 2,471,908,488.76 = 987,442,460.90 : x
  2. Step 2: Convert to fraction form
    1,791,232,607.90/2,471,908,488.76 = 987,442,460.90/x
  3. Step 3: Cross multiply
    1,791,232,607.90x = 2,471,908,488.76 × 987,442,460.90
  4. Step 4: Simplify right side
    1,791,232,607.90x = 2,440,867,401,260,774,400
  5. Step 5: Solve for x
    x = 2,440,867,401,260,774,400/1,791,232,607.90
  6. Step 6: Final answer
    x = 1,362,674,724.93

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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.