Home / 939,075,298.08-1,408,885,574.70-378,547,855.20

Finding the Fourth Proportional to 939,075,298.08, 1,408,885,574.70 and 378,547,855.20

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Solution

The fourth proportional to 939,075,298.08, 1,408,885,574.70 and 378,547,855.20 is: 567,931,680.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,075,298.08 : 1,408,885,574.70 = 378,547,855.20 : x
  2. Step 2: Convert to fraction form
    939,075,298.08/1,408,885,574.70 = 378,547,855.20/x
  3. Step 3: Cross multiply
    939,075,298.08x = 1,408,885,574.70 × 378,547,855.20
  4. Step 4: Simplify right side
    939,075,298.08x = 533,330,612,524,904,384
  5. Step 5: Solve for x
    x = 533,330,612,524,904,384/939,075,298.08
  6. Step 6: Final answer
    x = 567,931,680.89

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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.