Home / 740,487.08-1,021,870.68-400,956.32

Finding the Fourth Proportional to 740,487.08, 1,021,870.68 and 400,956.32

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Solution

The fourth proportional to 740,487.08, 1,021,870.68 and 400,956.32 is: 553,318.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,487.08 : 1,021,870.68 = 400,956.32 : x
  2. Step 2: Convert to fraction form
    740,487.08/1,021,870.68 = 400,956.32/x
  3. Step 3: Cross multiply
    740,487.08x = 1,021,870.68 × 400,956.32
  4. Step 4: Simplify right side
    740,487.08x = 409,725,507,368.70
  5. Step 5: Solve for x
    x = 409,725,507,368.70/740,487.08
  6. Step 6: Final answer
    x = 553,318.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.