Home / 870,703.04-1,306,158.40-421,100.83

Finding the Fourth Proportional to 870,703.04, 1,306,158.40 and 421,100.83

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Solution

The fourth proportional to 870,703.04, 1,306,158.40 and 421,100.83 is: 631,701.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,703.04 : 1,306,158.40 = 421,100.83 : x
  2. Step 2: Convert to fraction form
    870,703.04/1,306,158.40 = 421,100.83/x
  3. Step 3: Cross multiply
    870,703.04x = 1,306,158.40 × 421,100.83
  4. Step 4: Simplify right side
    870,703.04x = 550,024,378,794.71
  5. Step 5: Solve for x
    x = 550,024,378,794.71/870,703.04
  6. Step 6: Final answer
    x = 631,701.46

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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.