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Finding the Fourth Proportional to 1,402,368.76, 1,934,947.56 and 885,501.36

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Solution

The fourth proportional to 1,402,368.76, 1,934,947.56 and 885,501.36 is: 1,221,788.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,402,368.76 : 1,934,947.56 = 885,501.36 : x
  2. Step 2: Convert to fraction form
    1,402,368.76/1,934,947.56 = 885,501.36/x
  3. Step 3: Cross multiply
    1,402,368.76x = 1,934,947.56 × 885,501.36
  4. Step 4: Simplify right side
    1,402,368.76x = 1,713,398,695,908.68
  5. Step 5: Solve for x
    x = 1,713,398,695,908.68/1,402,368.76
  6. Step 6: Final answer
    x = 1,221,788.98

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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.