Home / 668,680.30-1,003,020.45-402,303.70

Finding the Fourth Proportional to 668,680.30, 1,003,020.45 and 402,303.70

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Solution

The fourth proportional to 668,680.30, 1,003,020.45 and 402,303.70 is: 603,455.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,680.30 : 1,003,020.45 = 402,303.70 : x
  2. Step 2: Convert to fraction form
    668,680.30/1,003,020.45 = 402,303.70/x
  3. Step 3: Cross multiply
    668,680.30x = 1,003,020.45 × 402,303.70
  4. Step 4: Simplify right side
    668,680.30x = 403,518,838,210.67
  5. Step 5: Solve for x
    x = 403,518,838,210.67/668,680.30
  6. Step 6: Final answer
    x = 603,455.55

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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.