Home / 425,740,007.80-638,610,011.70-153,075,345.40

Finding the Fourth Proportional to 425,740,007.80, 638,610,011.70 and 153,075,345.40

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Solution

The fourth proportional to 425,740,007.80, 638,610,011.70 and 153,075,345.40 is: 229,613,018.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,740,007.80 : 638,610,011.70 = 153,075,345.40 : x
  2. Step 2: Convert to fraction form
    425,740,007.80/638,610,011.70 = 153,075,345.40/x
  3. Step 3: Cross multiply
    425,740,007.80x = 638,610,011.70 × 153,075,345.40
  4. Step 4: Simplify right side
    425,740,007.80x = 97,755,448,116,875,552
  5. Step 5: Solve for x
    x = 97,755,448,116,875,552/425,740,007.80
  6. Step 6: Final answer
    x = 229,613,018.10

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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.