Home / 912,521.80-1,368,875.50-313,405.00

Finding the Fourth Proportional to 912,521.80, 1,368,875.50 and 313,405.00

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Solution

The fourth proportional to 912,521.80, 1,368,875.50 and 313,405.00 is: 470,139.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,521.80 : 1,368,875.50 = 313,405.00 : x
  2. Step 2: Convert to fraction form
    912,521.80/1,368,875.50 = 313,405.00/x
  3. Step 3: Cross multiply
    912,521.80x = 1,368,875.50 × 313,405.00
  4. Step 4: Simplify right side
    912,521.80x = 429,012,421,871.80
  5. Step 5: Solve for x
    x = 429,012,421,871.80/912,521.80
  6. Step 6: Final answer
    x = 470,139.37

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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.