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Finding the Fourth Proportional to 860,864.10, 1,291,296.15 and 708,648.90

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Solution

The fourth proportional to 860,864.10, 1,291,296.15 and 708,648.90 is: 1,062,973.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,864.10 : 1,291,296.15 = 708,648.90 : x
  2. Step 2: Convert to fraction form
    860,864.10/1,291,296.15 = 708,648.90/x
  3. Step 3: Cross multiply
    860,864.10x = 1,291,296.15 × 708,648.90
  4. Step 4: Simplify right side
    860,864.10x = 915,075,596,271.74
  5. Step 5: Solve for x
    x = 915,075,596,271.74/860,864.10
  6. Step 6: Final answer
    x = 1,062,973.35

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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.