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Finding the Fourth Proportional to 1,319,054,574.52, 1,978,645,492.74 and 433,720,332.64

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Solution

The fourth proportional to 1,319,054,574.52, 1,978,645,492.74 and 433,720,332.64 is: 650,601,421.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,054,574.52 : 1,978,645,492.74 = 433,720,332.64 : x
  2. Step 2: Convert to fraction form
    1,319,054,574.52/1,978,645,492.74 = 433,720,332.64/x
  3. Step 3: Cross multiply
    1,319,054,574.52x = 1,978,645,492.74 × 433,720,332.64
  4. Step 4: Simplify right side
    1,319,054,574.52x = 858,178,781,287,829,504
  5. Step 5: Solve for x
    x = 858,178,781,287,829,504/1,319,054,574.52
  6. Step 6: Final answer
    x = 650,601,421.55

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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.