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Finding the Fourth Proportional to 620,020.83, 855,581.40 and 348,036.16

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Solution

The fourth proportional to 620,020.83, 855,581.40 and 348,036.16 is: 480,263.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,020.83 : 855,581.40 = 348,036.16 : x
  2. Step 2: Convert to fraction form
    620,020.83/855,581.40 = 348,036.16/x
  3. Step 3: Cross multiply
    620,020.83x = 855,581.40 × 348,036.16
  4. Step 4: Simplify right side
    620,020.83x = 297,773,264,488.69
  5. Step 5: Solve for x
    x = 297,773,264,488.69/620,020.83
  6. Step 6: Final answer
    x = 480,263.33

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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.