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Finding the Fourth Proportional to 1,424,663.03, 1,966,038.16 and 771,295.93

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Solution

The fourth proportional to 1,424,663.03, 1,966,038.16 and 771,295.93 is: 1,064,390.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424,663.03 : 1,966,038.16 = 771,295.93 : x
  2. Step 2: Convert to fraction form
    1,424,663.03/1,966,038.16 = 771,295.93/x
  3. Step 3: Cross multiply
    1,424,663.03x = 1,966,038.16 × 771,295.93
  4. Step 4: Simplify right side
    1,424,663.03x = 1,516,397,236,694.50
  5. Step 5: Solve for x
    x = 1,516,397,236,694.50/1,424,663.03
  6. Step 6: Final answer
    x = 1,064,390.11

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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.