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Finding the Fourth Proportional to 909,230.40, 1,362,970.80 and 706,714.20

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Solution

The fourth proportional to 909,230.40, 1,362,970.80 and 706,714.20 is: 1,059,391.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,230.40 : 1,362,970.80 = 706,714.20 : x
  2. Step 2: Convert to fraction form
    909,230.40/1,362,970.80 = 706,714.20/x
  3. Step 3: Cross multiply
    909,230.40x = 1,362,970.80 × 706,714.20
  4. Step 4: Simplify right side
    909,230.40x = 963,230,818,545.36
  5. Step 5: Solve for x
    x = 963,230,818,545.36/909,230.40
  6. Step 6: Final answer
    x = 1,059,391.35

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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.