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Finding the Fourth Proportional to 614,547.20, 921,820.80 and 572,556.80

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Solution

The fourth proportional to 614,547.20, 921,820.80 and 572,556.80 is: 858,835.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,547.20 : 921,820.80 = 572,556.80 : x
  2. Step 2: Convert to fraction form
    614,547.20/921,820.80 = 572,556.80/x
  3. Step 3: Cross multiply
    614,547.20x = 921,820.80 × 572,556.80
  4. Step 4: Simplify right side
    614,547.20x = 527,794,767,421.44
  5. Step 5: Solve for x
    x = 527,794,767,421.44/614,547.20
  6. Step 6: Final answer
    x = 858,835.20

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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.