Home / 525,758.40-786,823.20-315,547.20

Finding the Fourth Proportional to 525,758.40, 786,823.20 and 315,547.20

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Solution

The fourth proportional to 525,758.40, 786,823.20 and 315,547.20 is: 472,231.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,758.40 : 786,823.20 = 315,547.20 : x
  2. Step 2: Convert to fraction form
    525,758.40/786,823.20 = 315,547.20/x
  3. Step 3: Cross multiply
    525,758.40x = 786,823.20 × 315,547.20
  4. Step 4: Simplify right side
    525,758.40x = 248,279,857,655.04
  5. Step 5: Solve for x
    x = 248,279,857,655.04/525,758.40
  6. Step 6: Final answer
    x = 472,231.84

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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.