Home / 1,119,312,554.40-1,679,184,032.40-429,165,986.40

Finding the Fourth Proportional to 1,119,312,554.40, 1,679,184,032.40 and 429,165,986.40

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Solution

The fourth proportional to 1,119,312,554.40, 1,679,184,032.40 and 429,165,986.40 is: 643,831,491.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,312,554.40 : 1,679,184,032.40 = 429,165,986.40 : x
  2. Step 2: Convert to fraction form
    1,119,312,554.40/1,679,184,032.40 = 429,165,986.40/x
  3. Step 3: Cross multiply
    1,119,312,554.40x = 1,679,184,032.40 × 429,165,986.40
  4. Step 4: Simplify right side
    1,119,312,554.40x = 720,648,671,612,075,520
  5. Step 5: Solve for x
    x = 720,648,671,612,075,520/1,119,312,554.40
  6. Step 6: Final answer
    x = 643,831,491.73

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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.