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Finding the Fourth Proportional to 570,312.08, 787,018.92 and 315,648.08

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Solution

The fourth proportional to 570,312.08, 787,018.92 and 315,648.08 is: 435,587.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,312.08 : 787,018.92 = 315,648.08 : x
  2. Step 2: Convert to fraction form
    570,312.08/787,018.92 = 315,648.08/x
  3. Step 3: Cross multiply
    570,312.08x = 787,018.92 × 315,648.08
  4. Step 4: Simplify right side
    570,312.08x = 248,421,011,021.67
  5. Step 5: Solve for x
    x = 248,421,011,021.67/570,312.08
  6. Step 6: Final answer
    x = 435,587.85

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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.