Home / 875,000.70-1,312,501.05-313,962.30

Finding the Fourth Proportional to 875,000.70, 1,312,501.05 and 313,962.30

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Solution

The fourth proportional to 875,000.70, 1,312,501.05 and 313,962.30 is: 470,943.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,000.70 : 1,312,501.05 = 313,962.30 : x
  2. Step 2: Convert to fraction form
    875,000.70/1,312,501.05 = 313,962.30/x
  3. Step 3: Cross multiply
    875,000.70x = 1,312,501.05 × 313,962.30
  4. Step 4: Simplify right side
    875,000.70x = 412,075,848,410.42
  5. Step 5: Solve for x
    x = 412,075,848,410.42/875,000.70
  6. Step 6: Final answer
    x = 470,943.45

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Double scale
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Similar ratio
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1.5x scale

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.