Home / 673,228.95-1,009,075.55-420,625.59

Finding the Fourth Proportional to 673,228.95, 1,009,075.55 and 420,625.59

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Solution

The fourth proportional to 673,228.95, 1,009,075.55 and 420,625.59 is: 630,458.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,228.95 : 1,009,075.55 = 420,625.59 : x
  2. Step 2: Convert to fraction form
    673,228.95/1,009,075.55 = 420,625.59/x
  3. Step 3: Cross multiply
    673,228.95x = 1,009,075.55 × 420,625.59
  4. Step 4: Simplify right side
    673,228.95x = 424,442,996,470.20
  5. Step 5: Solve for x
    x = 424,442,996,470.20/673,228.95
  6. Step 6: Final answer
    x = 630,458.62

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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.