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Finding the Fourth Proportional to 620,319.26, 856,061.26 and 348,435.07

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Solution

The fourth proportional to 620,319.26, 856,061.26 and 348,435.07 is: 480,852.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,319.26 : 856,061.26 = 348,435.07 : x
  2. Step 2: Convert to fraction form
    620,319.26/856,061.26 = 348,435.07/x
  3. Step 3: Cross multiply
    620,319.26x = 856,061.26 × 348,435.07
  4. Step 4: Simplify right side
    620,319.26x = 298,281,762,041.15
  5. Step 5: Solve for x
    x = 298,281,762,041.15/620,319.26
  6. Step 6: Final answer
    x = 480,852.01

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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.