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Finding the Fourth Proportional to 553,620.60, 830,430.90 and 453,893.40

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Solution

The fourth proportional to 553,620.60, 830,430.90 and 453,893.40 is: 680,840.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,620.60 : 830,430.90 = 453,893.40 : x
  2. Step 2: Convert to fraction form
    553,620.60/830,430.90 = 453,893.40/x
  3. Step 3: Cross multiply
    553,620.60x = 830,430.90 × 453,893.40
  4. Step 4: Simplify right side
    553,620.60x = 376,927,104,666.06
  5. Step 5: Solve for x
    x = 376,927,104,666.06/553,620.60
  6. Step 6: Final answer
    x = 680,840.10

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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.