Home / 740,302.65-1,021,618.04-400,770.90

Finding the Fourth Proportional to 740,302.65, 1,021,618.04 and 400,770.90

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Solution

The fourth proportional to 740,302.65, 1,021,618.04 and 400,770.90 is: 553,064.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,302.65 : 1,021,618.04 = 400,770.90 : x
  2. Step 2: Convert to fraction form
    740,302.65/1,021,618.04 = 400,770.90/x
  3. Step 3: Cross multiply
    740,302.65x = 1,021,618.04 × 400,770.90
  4. Step 4: Simplify right side
    740,302.65x = 409,434,779,343.18
  5. Step 5: Solve for x
    x = 409,434,779,343.18/740,302.65
  6. Step 6: Final answer
    x = 553,064.05

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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.