Home / 768,424.32-1,151,666.91-389,440.31

Finding the Fourth Proportional to 768,424.32, 1,151,666.91 and 389,440.31

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Solution

The fourth proportional to 768,424.32, 1,151,666.91 and 389,440.31 is: 583,669.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,424.32 : 1,151,666.91 = 389,440.31 : x
  2. Step 2: Convert to fraction form
    768,424.32/1,151,666.91 = 389,440.31/x
  3. Step 3: Cross multiply
    768,424.32x = 1,151,666.91 × 389,440.31
  4. Step 4: Simplify right side
    768,424.32x = 448,505,512,688.81
  5. Step 5: Solve for x
    x = 448,505,512,688.81/768,424.32
  6. Step 6: Final answer
    x = 583,669.08

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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.