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Finding the Fourth Proportional to 1,218,749.49, 1,830,927.01 and 859,746.61

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Solution

The fourth proportional to 1,218,749.49, 1,830,927.01 and 859,746.61 is: 1,291,597.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,749.49 : 1,830,927.01 = 859,746.61 : x
  2. Step 2: Convert to fraction form
    1,218,749.49/1,830,927.01 = 859,746.61/x
  3. Step 3: Cross multiply
    1,218,749.49x = 1,830,927.01 × 859,746.61
  4. Step 4: Simplify right side
    1,218,749.49x = 1,574,133,283,875.24
  5. Step 5: Solve for x
    x = 1,574,133,283,875.24/1,218,749.49
  6. Step 6: Final answer
    x = 1,291,597.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.