Home / 990,530.01-1,485,722.34-316,430.28

Finding the Fourth Proportional to 990,530.01, 1,485,722.34 and 316,430.28

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Solution

The fourth proportional to 990,530.01, 1,485,722.34 and 316,430.28 is: 474,622.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,530.01 : 1,485,722.34 = 316,430.28 : x
  2. Step 2: Convert to fraction form
    990,530.01/1,485,722.34 = 316,430.28/x
  3. Step 3: Cross multiply
    990,530.01x = 1,485,722.34 × 316,430.28
  4. Step 4: Simplify right side
    990,530.01x = 470,127,536,048.46
  5. Step 5: Solve for x
    x = 470,127,536,048.46/990,530.01
  6. Step 6: Final answer
    x = 474,622.20

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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.