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Finding the Fourth Proportional to 553,345.60, 830,018.40 and 545,051.20

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Solution

The fourth proportional to 553,345.60, 830,018.40 and 545,051.20 is: 817,576.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,345.60 : 830,018.40 = 545,051.20 : x
  2. Step 2: Convert to fraction form
    553,345.60/830,018.40 = 545,051.20/x
  3. Step 3: Cross multiply
    553,345.60x = 830,018.40 × 545,051.20
  4. Step 4: Simplify right side
    553,345.60x = 452,402,524,942.08
  5. Step 5: Solve for x
    x = 452,402,524,942.08/553,345.60
  6. Step 6: Final answer
    x = 817,576.80

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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.