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Finding the Fourth Proportional to 507,389.88, 700,209.36 and 289,594.20

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Solution

The fourth proportional to 507,389.88, 700,209.36 and 289,594.20 is: 399,646.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,389.88 : 700,209.36 = 289,594.20 : x
  2. Step 2: Convert to fraction form
    507,389.88/700,209.36 = 289,594.20/x
  3. Step 3: Cross multiply
    507,389.88x = 700,209.36 × 289,594.20
  4. Step 4: Simplify right side
    507,389.88x = 202,776,569,441.71
  5. Step 5: Solve for x
    x = 202,776,569,441.71/507,389.88
  6. Step 6: Final answer
    x = 399,646.46

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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.