Home / 1,059,848.51-1,590,298.58-420,138.72

Finding the Fourth Proportional to 1,059,848.51, 1,590,298.58 and 420,138.72

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Solution

The fourth proportional to 1,059,848.51, 1,590,298.58 and 420,138.72 is: 630,416.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,059,848.51 : 1,590,298.58 = 420,138.72 : x
  2. Step 2: Convert to fraction form
    1,059,848.51/1,590,298.58 = 420,138.72/x
  3. Step 3: Cross multiply
    1,059,848.51x = 1,590,298.58 × 420,138.72
  4. Step 4: Simplify right side
    1,059,848.51x = 668,146,010,869.36
  5. Step 5: Solve for x
    x = 668,146,010,869.36/1,059,848.51
  6. Step 6: Final answer
    x = 630,416.52

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Double scale
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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.