Home / 1,242,006.40-1,863,009.60-400,643.20

Finding the Fourth Proportional to 1,242,006.40, 1,863,009.60 and 400,643.20

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Solution

The fourth proportional to 1,242,006.40, 1,863,009.60 and 400,643.20 is: 600,964.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,006.40 : 1,863,009.60 = 400,643.20 : x
  2. Step 2: Convert to fraction form
    1,242,006.40/1,863,009.60 = 400,643.20/x
  3. Step 3: Cross multiply
    1,242,006.40x = 1,863,009.60 × 400,643.20
  4. Step 4: Simplify right side
    1,242,006.40x = 746,402,127,774.72
  5. Step 5: Solve for x
    x = 746,402,127,774.72/1,242,006.40
  6. Step 6: Final answer
    x = 600,964.80

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1.5x scale

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.