Home / 1,020,006.30-1,530,386.10-421,019.40

Finding the Fourth Proportional to 1,020,006.30, 1,530,386.10 and 421,019.40

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Solution

The fourth proportional to 1,020,006.30, 1,530,386.10 and 421,019.40 is: 631,684.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,006.30 : 1,530,386.10 = 421,019.40 : x
  2. Step 2: Convert to fraction form
    1,020,006.30/1,530,386.10 = 421,019.40/x
  3. Step 3: Cross multiply
    1,020,006.30x = 1,530,386.10 × 421,019.40
  4. Step 4: Simplify right side
    1,020,006.30x = 644,322,237,590.34
  5. Step 5: Solve for x
    x = 644,322,237,590.34/1,020,006.30
  6. Step 6: Final answer
    x = 631,684.57

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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.