Home / 1,119,312,907.40-1,679,184,561.90-429,166,339.40

Finding the Fourth Proportional to 1,119,312,907.40, 1,679,184,561.90 and 429,166,339.40

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Solution

The fourth proportional to 1,119,312,907.40, 1,679,184,561.90 and 429,166,339.40 is: 643,832,021.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,312,907.40 : 1,679,184,561.90 = 429,166,339.40 : x
  2. Step 2: Convert to fraction form
    1,119,312,907.40/1,679,184,561.90 = 429,166,339.40/x
  3. Step 3: Cross multiply
    1,119,312,907.40x = 1,679,184,561.90 × 429,166,339.40
  4. Step 4: Simplify right side
    1,119,312,907.40x = 720,649,491,607,615,744
  5. Step 5: Solve for x
    x = 720,649,491,607,615,744/1,119,312,907.40
  6. Step 6: Final answer
    x = 643,832,021.27

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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.