Home / 528,621.77-729,498.76-286,904.34

Finding the Fourth Proportional to 528,621.77, 729,498.76 and 286,904.34

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Solution

The fourth proportional to 528,621.77, 729,498.76 and 286,904.34 is: 395,928.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,621.77 : 729,498.76 = 286,904.34 : x
  2. Step 2: Convert to fraction form
    528,621.77/729,498.76 = 286,904.34/x
  3. Step 3: Cross multiply
    528,621.77x = 729,498.76 × 286,904.34
  4. Step 4: Simplify right side
    528,621.77x = 209,296,360,577.22
  5. Step 5: Solve for x
    x = 209,296,360,577.22/528,621.77
  6. Step 6: Final answer
    x = 395,928.38

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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.